A 19.2 Mbps 4x4 BLAST/MIMO Detector with Soft ML Outputs (NOT KNOWN IF TALK GIVEN)

This paper presents a silicon device that performs ML detection and produces soft outputs approximating the log-likelihood ratios (LLRs) of the a posteriori probabilities (APPs) for each of the transmitted bits. This algorithm is termed ML-APP. The ML search is achieved with a parallel processing architecture that exploits the symmetry of the system. A key advantage of providing soft outputs from the detector is for subsequent error control decoding.